New circuits from GuitarPCB and debugging the GuitarPCB Big Muff Pi Opamp board
New stuff (and some bugs)!
I ordered a few PCBs from GuitarPCB.com. It's becoming one of my favorite place to order PCB from. Instructions are clear and the PCBs are top quality. Barry (the owner) is always helping on the forums and so far I've had nothing but success.
The new stuff
Here's what I ordered in the last few weeks:
- two different Big Muff Pi circuits (Big Muff Pi Muff'N built to the Skreddy Pedals Mayonnaise Muff specs, and the Big Muff Pi Opamp)
- many One Knob Fuzz (they are so fun and easy to built and incorporate in anything that needs a fuzz)
- 4-Track Fuzz (which sounds like the distortion on old recording equipment when audio levels are maxed)
- Industrial Fuzz (based on ZVex Fuzz Factory)
- Sriracha Fuzz
- Ratt Deluxe
- a few Emerald Ring octave-up daughter board
- Plexi-Plus (similar to the Marvel circuit)
- Bass Driver (SVT preamp-style)
- Bass OD
- Add-Verb reverb
- Mini Me MN3207-based with CD4047N clock driver chorus
- a few Buff N' Blend
- their 3PDT Vari-Brite helper boards that are absolutely essential and huge time-savers
I've already built a few of them and they are great, but let's turn our attention the Big Muff Pi Opamp PCB.
The squealy Big Muff Pi Opamp
- EM interference
- ¼" stereo jacks picking up noise
- Dirty power supply
- Bad solder joint(s)
- External wiring problem
- Bad part(s)
The Buff N' Blend "transparency" issues
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